879 days! Russian cosmonaut breaks record for total time spent in space Russian cosmonaut Oleg Kononenko has now racked up more than 879 days in space, breaking the record for most time spent off Earth. https://cdn.mos.cms.futurecdn.net/QEjNxPaawc43Mjqv3gnH73.jpg https://www.space.com/cosmonaut-oleg-kononenko-breaks-record-time-in-space